Mali Levi, who plays Elinor Shilon in the third season, played herself in a few episodes in the first season. Nina Kotler, who plays Karin Koren in the third season, played in an episode in the first season her character from Mishak Hahayim (2003), Batya.
The soundtrack of the first three seasons are available on CD. The double CD of seasons one & two has reached gold.